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D1a <br /> AMES OORE. A PROFESSIONAL LIMITED PARTNERSHIP <br /> Pacific Gas&EleMric <br /> o. <br /> Page 4 <br /> the overezcavation,of the tank pit,and directed that three soil samples be takenatthe locations shown on Figure 2 <br /> of this report.Soil samples were obtained by the drive-tube method from soils obtained in the excavator's bucket. <br /> A stainless steel tube was pushed into the sampled soils,.and contained in the sample tube with plastic caps over <br /> teflon seals at each end. <br /> .: Upon retrieval,samples retained for chemical analysis were contained in the sample sleeve by.means of a plastic cap <br /> over a teflon seal on each end of the sample tube.The samples were placed into a cooler chest on"ice".under proper . <br /> chain-of-custody protocol for shipment to theanalytical laboratory. <br /> i <br /> RESULTS OF CHEMICAL ANALYSES <br /> Soil samples were transported-to a state-approved laboratory for chemical analyses.The laboratory analyses was <br /> focused on the detection of compounds commonly associated with gasoline using the following methods: <br /> f <br /> --EPA method 8020 for BTEX <br /> Method detection limit:Soil.-0.005 mg/kg <br /> --EPA method 8015.(modified) for total petroleum hydrocarbons as gasoline- <br /> Method detection limit:Soil- 1.mg/kg <br /> --Method 7420 for total lead <br /> Method detection limit:Soil 5 mg/kg <br /> The results of chemical analyses conducted on soil samples obtained from the excavation are summarized in the Table <br /> as follows: <br /> i <br /> PG&E Stockton Service Center <br /> 00160-290-042 <br /> t <br /> 4 <br />